The 3M™ Littmann® Cardiology IV™ Stethoscopes represents the next generation of highly recognised stethoscopes, delivering enhanced acoustic performance and superior audibility of high-frequency sounds with firm pressure on the adult side. Its unique chalice shaped chest piece of features tunable diaphragms on both sides, providing exceptional acoustic performance, diagnostic versatility and convenience for both adult and pediatric patients. The pediatric side of the chest piece can be converted o a traditional open bell by removing the tunable diaphragm and using the included non chill bell sleeve